module InactiveSupport::CoreExtensions::Hash::Keys

Public Instance Methods

assert_valid_keys(*valid_keys) click to toggle source

Validate all keys in a hash match *valid keys, raising ArgumentError on a mismatch. Note that keys are NOT treated indifferently, meaning if you use strings for keys but assert symbol as keys, this will fail. examples:

{ :name => "Rob", :years => "28" }.assert_valid_keys(:name, :age) # => raises "ArgumentError: Unknown key(s): years"
{ :name => "Rob", :age => "28" }.assert_valid_keys("name", "age") # => raises "ArgumentError: Unknown key(s): years, name"
{ :name => "Rob", :age => "28" }.assert_valid_keys(:name, :age) # => passes, raises nothing
# File lib/inactive_support/core_ext/hash/keys.rb, line 47
def assert_valid_keys(*valid_keys)
  unknown_keys = keys - [valid_keys].flatten
  raise(ArgumentError, "Unknown key(s): #{unknown_keys.join(", ")}") unless unknown_keys.empty?
end
stringify_keys() click to toggle source

Return a new hash with all keys converted to strings.

# File lib/inactive_support/core_ext/hash/keys.rb, line 6
def stringify_keys
  inject({}) do |options, (key, value)|
    options[key.to_s] = value
    options
  end
end
stringify_keys!() click to toggle source

Destructively convert all keys to strings.

# File lib/inactive_support/core_ext/hash/keys.rb, line 14
def stringify_keys!
  keys.each do |key|
    unless key.class.to_s == "String" # weird hack to make the tests run when string_ext_test.rb is also running
      self[key.to_s] = self[key]
      delete(key)
    end
  end
  self
end
symbolize_keys() click to toggle source

Return a new hash with all keys converted to symbols.

# File lib/inactive_support/core_ext/hash/keys.rb, line 25
def symbolize_keys
  inject({}) do |options, (key, value)|
    options[key.to_sym || key] = value
    options
  end
end
Also aliased as: to_options
symbolize_keys!() click to toggle source

Destructively convert all keys to symbols.

# File lib/inactive_support/core_ext/hash/keys.rb, line 33
def symbolize_keys!
  self.replace(self.symbolize_keys)
end
Also aliased as: to_options!
to_options()
Alias for: symbolize_keys
to_options!()
Alias for: symbolize_keys!